Limits an iterator to a given count. - Java Collection Framework

Java examples for Collection Framework:Iterator

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Description

Limits an iterator to a given count.

Demo Code


//package com.java2s;

import java.util.Iterator;

public class Main {
    /**/*w  w w  . j  av a 2  s  .  c  o m*/
     * Limits an iterator to a given count.
     */
    public static <T> Iterator<T> limitIterator(final Iterator<T> it,
            final long limit) {
        return new Iterator<T>() {
            long left = limit;

            @Override
            public void remove() {
            }

            @Override
            public T next() {
                left--;
                return it.next();
            }

            @Override
            public boolean hasNext() {
                return left > 0 && it.hasNext();
            }
        };
    }
}

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